Tramadol is synthetic opioid so it is a narcotic per say(fentanyl, sufenta, alfentanil etc are all synthetic opioids), but is highly receptor specific so there is very little problem with respiratory depression, dependence etc.
The Smithsonian Institution (/smÉªÎ¸ËsoÊniÉn/ smith-SOE-nee-Én), established in 1846 for the increase and diffusion of knowledge, is a group of museums and research centers administered by the Government of the United States.
Smithsonian Institute, Washington. The Smithsonian Institue is more than just a museum, it's the world's largest museum complex and research organisation composed of 17 museums and a national zoo in Washington with links to two more museums in New York.